2273605 has 4 divisors (see below), whose sum is σ = 2728332. Its totient is φ = 1818880.

The previous prime is 2273603. The next prime is 2273651. The reversal of 2273605 is 5063722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 338724 + 1934881 = 582^2 + 1391^2 .

It is not a de Polignac number, because 2273605 - 2¹ = 2273603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2273605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2273603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227356 + ... + 227365.

It is an arithmetic number, because the mean of its divisors is an integer number (682083).

2^2273605 is an apocalyptic number.

It is an amenable number.

2273605 is a deficient number, since it is larger than the sum of its proper divisors (454727).

2273605 is an equidigital number, since it uses as much as digits as its factorization.

2273605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454726.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 2273605 is about 1507.8478039908. The cubic root of 2273605 is about 131.4937179841.

The spelling of 2273605 in words is "two million, two hundred seventy-three thousand, six hundred five".